#ifndef LIST_SEQUENCELIST_SEQLIST_H
#define LIST_SEQUENCELIST_SEQLIST_H

const int DefaultSize=100;

template <typename Type> 
//Sequence List 
class SeqList
{
public:
	SeqList(int sz=DefaultSize):m_nmaxsize(sz),m_ncurrentsize(-1)
	{
		if(sz>0)
		{
			m_elements=new Type[m_nmaxsize];
		}
	}
	~SeqList()
	{
		delete[] m_elements;
		m_elements = static_cast<Type*>(0);
	}
	int Length() const
	{					//get the length
		return m_ncurrentsize+1;
	}
	int Find(Type x) const;				//find the position of x
	int IsElement(Type x) const;		//is it in the list
	int Insert(Type x,int i);			//insert data
	int Remove(Type x);					//delete data
	int IsEmpty()
	{
		return m_ncurrentsize==-1;
	}
	int IsFull()
	{
		return m_ncurrentsize==m_nmaxsize-1;
	}
	//get the ith data
	Type Get(int i)
	{					
		return i<0||i>m_ncurrentsize ?(cout<<"can't find the element"<<endl,0): m_elements[i];
	}
	void Print();

private:
	Type *m_elements;
	const int m_nmaxsize;
	int m_ncurrentsize;
};

template <typename Type> 
int SeqList<Type>::Find(Type x) const
{
	for(int i=0;i<m_ncurrentsize;i++)
		if(m_elements[i]==x)
			return i;
	cout<<"can't find the element you want to find"<<endl;
	return -1;
}

template <typename Type> 
int SeqList<Type>::IsElement(Type x) const
{
	if(Find(x)==-1)
		return 0;
	return 1;
}

template <typename Type> 
int SeqList<Type>::Insert(Type x, int i)
{
	if(i<0||i>m_ncurrentsize+1||m_ncurrentsize==m_nmaxsize-1){
		cout<<"the operate is illegal"<<endl;
		return 0;
	}
	m_ncurrentsize++;
	for(int j=m_ncurrentsize;j>i;j--){
		m_elements[j]=m_elements[j-1];
	}
	m_elements[i]=x;
	return 1;
}

template <typename Type> 
int SeqList<Type>::Remove(Type x)
{
	int size=m_ncurrentsize;
	for(int i=0;i<m_ncurrentsize;)
	{
		if(m_elements[i]==x)
		{
			for(int j=i;j<m_ncurrentsize;j++)
			{
				m_elements[j]=m_elements[j+1];
			}
			m_ncurrentsize--;
			continue;
		}
		i++;
	}
	if(size==m_ncurrentsize){
		cout<<"can't find the element you want to remove"<<endl;
		return 0;
	}
	return 1;
}

template <typename Type> 
void SeqList<Type>::Print(){
	for(int i=0;i<=m_ncurrentsize;i++)
	{
		cout<<i+1<<":\t"<<m_elements[i]<<endl;
	}
	cout<<endl<<endl;
}

#endif

